Desiccating process.



C. H. BRIGHAM.

DESIGGATING PROCESS.

APPLICATION FILED 11:13.26, 1910.

C. H. BRIGHAM.

DESIGGATING PROCESS.

APPLICATION FILED PEB.2U,1910.

Patented Sept. 2, 1918.

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CHARLES H. BRIHA'M, OF BROOKLYN, NEW YORK, SSIGNOB T0 POWDEBED MILK i COMPANY E AMERICA, A CORPORATION 0F NEW YORK.

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Specification of Izette'rs atet.

Patented Septic 2,

pplioation led February 26, 1910. Serial No. 543,104.

To all 'whom t may concern Be it known that I, CHARLES H. BRGHAM, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improved Desiccatin yProcess of which the following is a speci cation.

rlhe invention relates to an improved process for separating the moisture from the constituent solids of liquids and semiliquids and recovering the solids in the form of a substantially dry powder which may, by the addition of sultable moisture, be reconstituted into a liquid or semi-liquid possessing all the characteristics of the original.

According to the linvention the liquid is put in very finely-divided condition by spraying it (preferably by means of a particularly effective form of nozzle hereinafter described) and in that condition is surreunded by an envelop of air introduced under pressure and moving in the direction of the spray, which envelop of air absorbs the moisture from the liquid. By supplying air under pressure around and in the direction of the spray I am enabled to bring in contact with the liquid or semi-liquid a very large amount of air the power of which to absorb moisture has not been impaired and thus to obtain better results than are otherwise obtained.

The nature of the process is apparent upon an inspection of the accompanying illustrative drawings Figure 1 of which represents diagrammatically an apparatus adapted to the practice of my invention and Fig. 2 a cross-section of the nozzle of the rinjector or atomizer.

Air, which is preferably filtered by being drawn through an air filter, is compressed in the air compressor and stored. in the air storage tank, whence it is conducted. in a regulated, constant'amount to the injector A. The injector is connected by a pipe to the tank holding the liquid B, which tank may be connected with a larger reservoir. The injector consists of an inner tube a for the liquid surrounded by a tube b connected with the supply of air under pressure. Both the inner and outer tubes are contracted at the end, as shown in Fig. 2, in such manner that the air between them under pressure creates a partial vacuum near the orifice of the inner tube and draws the liquid therefrom, at the same time forclng it from the orifice through the outer tube, thus eii'ectlvely s raying 1t in finely-divided form. .Around t e spray and moving in the samedirection an envelop of air underl pressure 1s supplied in sufiic1ent quantity to ahsorb the moisture from the liquid, by means preferably of a blast blower, as indicated in the drawing. A blast blower is convenient for this purpose, although it may be accompllshed by an air-compressor or by making an additional connection with the compressor supplying air under-pressure of the 1n]ector. The llquid thus presented in finely-divided form to a constantly-renewed, absorbing envelop of air is effectively dried. The dried product may be collected in any convenient manner.

In the drawing is indicated a chamber of suiicient length to permit of the absorption of the moisture from the liquid and of such shape as to accommodate the s ray and surrounding absorbing envelop, but this may obviously be modified. For example, the spray and surrounding envelop may be directed vertically or horizontally and several of them used in a single chamber connected with a common collector if for any reason that is found convenient.

I do not desire to be understood as limiting myself to the precise arrangement'shown in the drawings, in carrying out the process the same being merely illustrative and the most advantageous arrangement depending largely on conditions not directly involved in my invention.

The product of my process is superior particularly in the case of milk, to which the invention is particularly -applicable,

I am aware that it has been suggested that liquids be sprayed, and I do not broadly claim spraying in itself or spraying and supplying air to the spray.

at I claim is 1. The process of obtaining the solid constituents of liquids and semi-liquids in the form of a substantially dry powder, which consists in converting the mass into a fine spray and surrounding the spray with an envelop of forcibly projected air introduced under ressure moving in the same direction with t e spray.

2. The process of obtaining the solid constituents of liquids and semi-liquids in the form of a substantially dry powder, which consists in converting the mass into a fine spray and surrounding the spray with a divergging envelop of forcibly pro3ected air introduced under pressure and moving in thcl same direction with the enveloped spray.

3. The process of obtaining the solid constituents of liquids and semi-liquids in the form of a substantially dry powder, which consists in converting the mass into a fine spray increasing in cross area from a point of projection and surrounding the spray with a diverginv envelop of forcibly projected air introduced under ressure and moving in the same direction wlth lthe spray.

4. A process of obtaining the solid constituents of liquids and semi-liquids in the form of a substantially dry powder, which com rises converting the liquid into a spray, causlng a large amount of drying agent to travel around the spray in the saine direction with it in such manner as to present at cach point on the path of the spray suecessive quantities of the drying agent.

' CHAS. H. BRIGHAM.

Witnesses:

HERMAN GUsrow., KATHRYN M. KILEY. 

